Free Shipping On Orders Over $75. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $10,000 in Store Credit! Enter Now >

Ford Performance BOSS 302 Cylinder Block; Big Bore

Item 399332
Call a Mustang Enthusiast at 1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Market Price $2,497.29 You Save 12% ($287.30)
Our Price

$2,209.99 (each)

+ $99.00 Handling Fee with FREE Shipping

Out of Stock

Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
Choose options to add to cart.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    or use

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Cast Iron Cylinder Block
      • Factory Engine Block Style
      • 125” Bore Size (Siamese)
      • Splayed 4-Bolt Main on 2, 3, 4 Main Caps
      • 2-Bolt Main on First and Fifth Main Caps
      • 2” Deck Height
      • Cast Iron Main Cap Material
      • Machined to Accept Factory Roller Lifter Guides and Lifter Guide Retainer
      • NASCAR Inspired Front Oil Feed on Both Lifter Galleys
      • Made for Highly Competitive Environments
      • Fits All 1979-1995 Ford Mustang Models


      Proven for Track Performance. The Ford Performance BOSS 302 Cylinder Block with Big Bore is an engine block with a proven capability on the race track and on the street. Its 4.125 bore capacity makes it a winner right out of the box along with its superior design and construction. This ready to assemble block will indeed expand your Mustang’s racing performance.

      For a Simple and Economical Assembly. This high-performance engine block has been designed for simple, fast, and economical assembly. It has been machined to accept factory roller lifter guides and lifter guide retainer. It has also been machined with an additional .125-inch at the initial block fixturing and boring stage. And with its design, this engine block will support engine sizes of up to 363 cubic inches with an unfinished 4.120-inch bore size.

      Designed for Long-Lasting Use. The BOSS 302 Cylinder Block has been cast and machined for long-lasting durability. It has been made out of diesel-grade iron with Siamese bores, along with thick decks and walls. To ensure optimum performance, this engine block requires the special length 1/2" head bolts M-6065-BOSS or head studs M-6014-BOSS with M-6049-X306/307/Z304DA heads. It should also be noted that this block is designed for M-6049-X306//X307/C3/D3/Z304DA cylinder heads. It is not intended for production 302/351W or M-6049-Y302/Y303/X302/X303/X304/X305 cylinder heads

      Important Note: This cylinder block is designed for use on competitions only. Installation of this engine on a vehicle that is driven on public roads and highways may violate US and Canadian emissions laws and regulations.

      Application. The Ford Performance BOSS 302 Cylinder Block with Big Bore has been designed to fit all Ford Mustang vehicles.


      Ford Performance M-6010-B302BB

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Aluminum Cylinder Block

      Tech Specs


      Customer Reviews (1)

        Reviews of Ford Performance Engine products have an average rating of 4.8 out of 5

          Questions & Answers

          10 More Questions

              Related Mustang Categories